/**
 * Copyright 2012-2014 Java Creed.
 * 
 * Licensed under the Apache License, Version 2.0 (the "<em>License</em>");
 * you may not use this file except in compliance with the License. You may 
 * obtain a copy of the License at: 
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0 
 * 
 * Unless required by applicable law or agreed to in writing, software 
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT 
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the 
 * License for the specific language governing permissions and limitations 
 * under the License.
 */
package com.javacreed.examples.gson.part3;

import java.io.IOException;

import com.google.gson.Gson;
import com.google.gson.TypeAdapter;
import com.google.gson.stream.JsonReader;
import com.google.gson.stream.JsonWriter;

public abstract class AbstractTypeAdapter<T> extends TypeAdapter<T> {

  private Gson gson;

  protected <E> void delegateWrite(final JsonWriter out, final E object) throws IOException {
    @SuppressWarnings("unchecked")
    final Class<E> type = (Class<E>) object.getClass();
    delegateWrite(out, object, type);
  }

  protected <E> void delegateWrite(final JsonWriter out, final E object, final Class<E> type) throws IOException {
    final TypeAdapter<E> typeAdapter = gson.getAdapter(type);
    typeAdapter.write(out, object);
  }

  @Override
  public T read(final JsonReader in) throws IOException {
    throw new UnsupportedOperationException("Method not implemented");
  }

  public void setGson(final Gson gson) {
    this.gson = gson;
  }

  @Override
  public void write(final JsonWriter out, final T value) throws IOException {
    throw new UnsupportedOperationException("Method not implemented");
  }
}
